Bug #77928 [Nab]: echo ('string'==0)?"TRUE":"FALSE"; // TRUE

Edit report at https://bugs.php.net/bug.php?id=77928&edit=1 ID: 77928 Updated by: kalle@php.net Reported by: shamil dot kur at gmail dot com Summary: echo ('string'==0)?"TRUE":"FALSE"; // TRUE Status: Not a bug Type: Bug Package: *General Issues Operating System: Debian PHP Version: 7.3.4 Block user comment: N Private report: N New Comment: You may also find this RFC proposal for PHP8 by Nikita relevant: https://wiki.php.net/rfc/string_to_number_comparison Previous Comments: ------------------------------------------------------------------------ [2019-04-21 15:37:38] kalle@php.net This happens due to PHP's nature of type juggling. You are supplying a string on the left operand ('string') and comparing it to an integer on the right operand (0). Please refer to the documentation for this: https://www.php.net/manual/en/language.types.type-juggling.php https://www.php.net/manual/en/language.operators.comparison.php If you supply the same type on both operands you will get the expected results: https://3v4l.org/Zkind ------------------------------------------------------------------------ [2019-04-21 09:48:08] spam2 at rhsoft dot net jesus christ with == one of both needs to be implicit casted before they are compared and a lot of stuff casts to 0 but again: everybody knows that and the documentation is very clear ------------------------------------------------------------------------ [2019-04-21 09:44:10] spam2 at rhsoft dot net what about reading a php documentation for beginners and start using === instead spam bug trackers? ------------------------------------------------------------------------ [2019-04-21 06:28:27] shamil dot kur at gmail dot com Or do you want to say that when comparing with int, any string == 0? If so, then the question is closed. But "8"==8, "0"==0, "7"==7, "7"!=8 but "7"==0 ------------------------------------------------------------------------ [2019-04-21 06:23:44] shamil dot kur at gmail dot com If decided that this is not an error. That does not equate \0 to any string. Let it always be not equal. Because, it is ambiguity. Is this logical? <?php if("any string"==0)echo "this\n"; if("\0"==0)echo "and this\n"; //Result: this end this ------------------------------------------------------------------------ The remainder of the comments for this report are too long. To view the rest of the comments, please view the bug report online at https://bugs.php.net/bug.php?id=77928 -- Edit this bug report at https://bugs.php.net/bug.php?id=77928&edit=1